Locking device for safes.



No. 761,194. PATENTBD MAY 31, 1904.

. M. B. @L J. B. Boos.

ING DEVICE POR SAFES. A

l APPLICATION FILED FEB. 24. 1903.

N0 MODEL.

. By f 7% Mme/.sz-

i' UNITED kSTAT-Es Patented May 31, 1904i.l

PATIENT OFFICE.

CASPER M. TB.' NDYJOSEPHB. BOOS, OF -MUSCATINE, IOWA.

Loo'llNe.,r DEVICE FOR sAFEs.'

SPECIFICATION forming part of Letters Patent No; v761,194, dated May 31, 1904. f Application sied February 24, 190'3. serai No', 144,780; (No miei.)

To aZZ'w'h/om t may concern:

'Be it known that we, CASPER M. B. Boos and f JOSEPH B. Boos, citizens of the United States, residingatMuscatine, inthe county of Musea-L tine and State of Iowa, h ave invented certain' new and useful Improvements in Locking Dey inthesafe-body, tov thereby provide a strong vices for Safes, of Whichthe following is a l specification. :n vOur inventlon relates to and consists 1n cer- ""Ourobject is to provide means of simple, I5

durable, and inexpensive construction, whereby locking-segments carried by the door are forced mto grooves designed to receive them lock 4which cannot become "so'easily broken or j to provide means for projecting and withdrawcut through, as would be possible with the use of any number of locking-bolts. K

Our lobject is further and more/specifically ing these locking-segmentsv and also to provide improved means for making the mechanism which controls the movement of the locking-segments either operative or inoperative, said means tov be vgoverned by time or combination lock. l 4

Our invention consists in certain details in the construction,arrangement, and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in our claims, and illustrated in the accompanying drawings, in which- 1 Figure 1 shows an inside elevation of a'safedoor provided with our improved locking mechanism, showing by dotted lines the position that the slide-bolt would assume when in its locked position and also showing by dotted lines the outline of one of the locking-segments and its operating-arm. Fig. 2 shows a sectional view of same on the indicated line 2 2 of Fig. 1. Fig. 3 shows in perspective the locking mechanism detached from the door, and Fig. 4 shows in perspective a modified form of the locking-segments.

Referring to the accompanying drawings, We have used the reference-numeral 10 to indi- 'flush with the 'inner face of the door.

cate the safe-door, which is preferably formed complete of one piece of metal and is provided with a number of beveled surfaces 11 on its periphery,'with shoulders 12 betweenl them. The numeral 13 indicates a conical spindle extended `through the central Aportion of the door with its base Hush with the outer surface of the door, and in its base is an angular recess to receive a crank 14, by which the spindle may be rotated. The inner portionof thespindle is screw-threaded at 15, and a round nut 16 is screwed to this screw-threaded portion and held in place by a pin 17. In this nut 16 is a recess 18, for purposes hereinafter made clear, and the inner surface of the nut 16 is rounding the'nut 16 is a circular rim 19, the inner surface of which is flush with the inner face of the door, and in this inner surface of the rim is a radial-groove in which a bolt l2() is slidingly mounted, said bolt being capable of entering the recess 18 and also capable of entering a recess 21, formed in the inner face of the door.

The numeral 22 indicates a pin `projecting inwardly from bolt 2O and projected through a segmental slot 23, formed in a lever 24. This lever 24 is pivoted at 25 to the inner face of the door, and its other end isv pivoted to an arm 26, which arm is moved by a lock 27. The lock 27 is'of ordinary construction and its parts are not illustrated. It is intended that either a time or combination lock may be used in this connection, itsv only object being to move the lever 24.

The locking-segments are indicated by the reference-numeral 28, and in the present instance we have shown three segments. These segments together form a complete circle and are set in a groove formed in the periphery of the door near its inner face. To provide for projecting the edges of these rims beyond the periphery of the door, we have provided each segment with an integral arm 29, which arm is arranged tangentially relative to the rim 19 and is connected therewith by means of a pin 30 on the arm entering a groove 30a Sur? in the rim 19. The arms move through openings provided in the door. Obviously when said rim is rotated in one direction all of the IOC lut l segments 28 will be forced outwardly, and when the rim is rotated in an opposite direction they will be withdrawn into the body of the door. The grooves provide for a slight movement of the arms 29 relative lto the rim 19, so that the arms may move in straight lines. f

In the modification illustrated in Fig. 4 we have shown a locking-segment which differs from the preferred form in that the segment is provided with a number of integral projections 32, which projections are designed to enter a groove formed in the safe-body, and

by this means a large number of locking projections may be employed with comparatively little operating machinery. l

f means of the crank 14:, it will be seen that this- "Inpractical use and assuming, the door to be in its locked position, with the lockingsegments projected beyond the periphery of the door, the bolt 20 is projected into the notch or recess 21, and the rim 19 is thereby positively held against rotation, so that` the locking-segments cannot be Withdrawn until this bolt in the rim 19 is withdrawn from the recess 21. If when the parts are in this p0- sition the conical spindle should be rotated by would have no effect upon the, rim 19, as the said -conical spindle and its nut 16may freely rotate, and the only way that the segments can be withdrawn is by-first moving the lever 211 toward the lock 27 in such manner that the bolt 2O is projected into the recess 18 of thel nut 16. When this is done, the rim 19 is then connected with the nut 16 by means ofy the bolt 20, so that they will rotate in unison, and then as the operator turns the crank 14: in the proper direction the rim 19 `may be rotated freely except as limited by the pin 22 in the slot 23. yThis movement will have the effect of drawing each of the locking-segments to position with its periphery liush with the periphery of the door, and then the door may.

be freely opened. In locking the door the crank 14 is turned and lthe locking-segments are projected, after which the time or combination lock 27 is operated in such manner as to force the bolt 2O into the recess 21.

Having thus described our invention, what we claim, and desire to secure by Letters Patent of the United States therefor, is-

having an annular groove in its periphery and a notch on its inner face, a conical arbor passed through the door with its base outwardly, means for rotating the arbor from the outer surface of the door, a round nut fixed to the inner end ofthe arbor and having a notch therein, an annular rim in the inner face of the door surrounding said nut and having a groove therein, a bolt slidinglyvmoxunted in saidv groove and susceptible of being projected linto either one of said notches, a lever fulcrumed to the inner surface of' the doors and having a segmental slot therein, a pin passed I through the vslot and fixed to thebolt, a lock connected with the other end of the lever and moving it as required to project the bolt into either of said notches, anumber of segmental locking devices slidingly mounted in the annulargroove in the door, and an arm fixed to each segmental locking device andpivotally connected to thesaid rim, arranged and combined substantially in the manner set forth and for the purposes stated. A

CASPER M. B. BOOS. 'JOSEPH B. BQOS.

I Witnesses: 

